COMPOSITIONAL AND OPTICAL BAND GAP OF TERNARY Cd0.47Al0.05S0.48GLASSY THIN FILMS

摘要

Cadmium Sulphide alloyed with 5% Aluminum was synthesized by CBD technique at room temperature to produce ternary Cd-Al-S glassy thin film and its composition and optical properties were analyzed using Rutherford Backscattering Spectrometry (RBS). The Al3+ dopant in CdS resulted in high absorption coefficient peak of 1.5 in 200-300 nm range and maximum transmission of 60% at 680 nm. A band gap of 2.6 eV as compared to approximately 2.42 eV reported for CdS was obtained. Various values of other optical parameters have also been recorded